<!DOCTYPE html>
<html>
<head>
<meta charset="UTF-8">
<title>Insert title here</title>
    <script>
        var sum = new Function("x", "y", "x+=10; y+=10; return x+y");
        var data = sum(3, 5);
        console.log(data +" , "+(typeof sum));
        
        var some = function(){
        return;
        
        };
        some(1,2,4,5,6);
        
    </script>
</head>
<body>

</body>
</html>